Enchanting Lullaby

You know how to put others into slumber with enchanting melodies.

• You know how to cast Sleep and can cast it once as a 3rd-level spell without a spell slot. You can use this feat again after you finish a long rest. You can also cast Sleep with any spell slots you have.
• You gain proficiency with a musical instrument of your choice, and you can use that type of instrument as a spellcasting focus for any spell from the enchantment school.